Patch tracker / KB5002735

KB5002735: Office Online Server Security Update (June 2025)

KB5002735 is a High security update for Office Online Server, released 2025-06-10. It closes 1 CVE with a maximum CVSS of 7.8. It is the 24th largest of the 31 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2025-06-10
Released
1
CVEs fixed
7.8
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 1 CVE for Office Online Server. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.8 (High). EPSS exploit probability up to 2.0%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for Office Online Server has shipped since this one: KB5002884 (2026-08-11). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.

Microsoft Update Catalog: download KB5002735Microsoft support article
Senserva AI Opinion for KB5002735

This is a sibling package to another June KB fixing the same CVE-2025-47165, Severity High at CVSS 7.8, for Office Online Server and Office 2019, likely covering a different language edition or architecture. Confirm which package matches the deployed edition before considering the patch complete. Office Online Server deployments in particular should not be overlooked since they are less commonly inventoried than desktop Office.

Do this: Confirm edition match and apply this package to any Office Online Server or Office 2019 host still missing the June fix.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5002735

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5002735

Released
2025-06-10
Last changed
2025-06-10
Changes tracked
1

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Check if KB5002735 is installed

Elevated PowerShell. No output means it is not installed.

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVESeverityCVSSEPSSExploited
CVE-2025-47165High7.82.0%No

Scope and sources

Affected products
Also released in June 2025

KB5058403

34 CVEs · High · exploited

KB5058429

25 CVEs · High · exploited

KB5058430

29 CVEs · High · exploited

KB5058451

34 CVEs · High · exploited

KB5058454

29 CVEs · High · exploited

KB5058497

42 CVEs · High · exploited

KB5060525

39 CVEs · High · exploited

KB5060533

34 CVEs · High · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002735 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.